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Air NOT blowing into cab

Discussion in '2nd Gen Tundras (2007-2013)' started by MtnBiker18, Jun 30, 2021.

  1. Jun 30, 2021 at 6:54 AM
    #1
    MtnBiker18

    MtnBiker18 [OP] New Member

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    HI, I have an interesting problem. I haven't ran the AC in quite a while, but I'd like to. About a month, or more, ago, when I'd shut the truck off, after about 2 or 3 minutes, I'd hear like a moaning noise coming from under the dash. Flash forward to this week, when the Temps reached the low 90's, and I turned on the AC. I can hear the blower motor spin up, but nothing comes out the vents. I wonder if the 'moaning' I'm hearing has something to do with an actuator connected to a door that is stuck closed? If that is the case, how can I get the door opened?? If its not the case, then what do you thing would cause the issue (the air not coming into the cabin)? Yes, the AC does work. The issue is with the air not coming into the cab.

    2010 Tundra Limited 4x4

    Thank you for your time.
     
  2. Jun 30, 2021 at 7:29 AM
    #2
    Sundog

    Sundog Zoom Zoom

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    Let's hope it is an actuator issue and not a door issue. The door is in one until, not really serviceable. The doors run off or rods that turn and twist the door with it. I had an issue with my '14 and it groaned for a while when I tried to get floor heat. After a while it just stopped working (no floor air flow). Dealer asked if there were any smells (i.e., dead mouse blocking the door) and thought I had dropped something in the unit from the defrost vents. Nope, nothing in the unit. The shaft snapped so the entire unit had to be replaced.

    If your entire unit needs to be replaced it isn't pretty. See in this thread: https://www.tundras.com/threads/upd...seriously-pic-hvac-core-being-replaced.70864/




    See #1 below. This is for a 2010 Tundra limited.
    upload_2021-6-30_9-15-52.jpg
     
  3. Jul 1, 2021 at 11:48 PM
    #3
    FWD Tundra

    FWD Tundra New Member

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    Check your cabin Air Filter first before you tear into the system. It may be clogged with leaves and or a rat/squirrel nest.
     
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  4. Jul 6, 2021 at 7:40 AM
    #4
    MtnBiker18

    MtnBiker18 [OP] New Member

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    Thanks for the info, guys. The Dealer said they wanted $1300, just to pull the dash.
     
  5. Jul 6, 2021 at 7:52 AM
    #5
    Sundog

    Sundog Zoom Zoom

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    Update us which ever way it goes.
     
  6. Jul 6, 2021 at 8:05 AM
    #6
    MtnBiker18

    MtnBiker18 [OP] New Member

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    Will do.

    Thanks.
     
  7. Jul 6, 2021 at 8:08 AM
    #7
    biebs96

    biebs96 my other truck is a big brown truck

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    Following. I had an hvac issue on my 2nd gen and never got it fully resolved.
     
  8. Jul 6, 2021 at 8:21 AM
    #8
    Trident

    Trident New Member

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    You can check that and your blower by just taking the glove box out. Check the simplest things first K.I.S.S.
     
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  9. Sep 12, 2021 at 10:29 PM
    #9
    NueveTundra

    NueveTundra A Unlucky Human

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    Exterior: Toytec ultimate 3" lift level , GoodYear helper air bags , DayStar air bag cradles, AcanII smoked headlights, AcanII smoke Tail lights (2.5 gen style), DV8 front winch bumper , Badlands 12k winch , White AUTMATCH Shackles 3/4" D Ring Shackle, White AutoBots winch hook, Trail Ridge mirrors , 20x9 Creeps rims , 33x12.50r20 RoadOnes , Black Hart cross drilled n slotted rotors , Rigid flood flush mounts rear bumper , WeatherTec rain guards , OEM black side badges , Rigid Amber Radiance Pods. Energy Suspension Red Rack and Pinion Bushings, EAG front mesh Grille, RCI HighLift bed mounts. Rough Country DS2 Steps, A.R.E OverLand Canopy with Ascend basket, Stickers: ToyTec lifts windshield banner, Red Strange Music window sticker(back cab), White Strange Music sticker(back canopy), White Rigid sticker x2 (canopy sides), white Official BigFoot Research Team (Back Canopy) Interior: Alpine double din touch iLX-650 , JL C5-653's (front) JL C1-650x (rear) , JL JX400 4 channel amp , JL JX500 mono amp , 2 JL 12" subs , WeatherTec floor mats, Kenwood F/R Dash Cams, Under the Hood: Koyo all aluminum radiator, Mishimoto red silicon hoses , XS Power 3000 amp battery , LAlectric 300 amp Alternator , K&N replacement filter. Online LED store accessories Fuse/relay box. unknown Cat-Back exhaust.
    Sooo how did it goo??
     
  10. Sep 14, 2021 at 9:14 AM
    #10
    FWD Tundra

    FWD Tundra New Member

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    Any luck with your project?
     
  11. Sep 18, 2021 at 1:16 PM
    #11
    grave

    grave New Member

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    having the same issue in my '07. my mechanic told me it was the blower motor and that the whole dash will have to come out to replace it.
     
  12. Sep 18, 2021 at 1:49 PM
    #12
    Danny3737

    Danny3737 New Member

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    It took me less than 20 minutes to replace mine in my 2012. It was out of state in an Autozone parking lot
     
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  13. Sep 20, 2021 at 7:25 AM
    #13
    audiowize

    audiowize New Member

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    I can verify that your mechanic needs to be your ex mechanic. I had a little bit of a hard time popping off one of the wiring clips that needed to move a little to get the blower out, so I think it took me 21 minutes to replace mine a few weeks ago.
     
  14. Sep 23, 2021 at 2:07 PM
    #14
    grave

    grave New Member

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    hmm, maybe i'm mistaking some terminology then. it was almost two months ago. he said it's the motor way down inside that shifts the doors (or whatever) betweeen AC & defrost.

    what part was it that you two replace in 20 minutes?
     
  15. Sep 23, 2021 at 2:20 PM
    #15
    Sundog

    Sundog Zoom Zoom

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    One can replace the blower motor in 20-30 minutes.

    The HVAC unit, that contains and controls the blend doors, is dead center on the dash down by the floor. And YES, then entire flipping dash needs to be taken out to replace that unit.
     
  16. Sep 24, 2021 at 1:21 PM
    #16
    grave

    grave New Member

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    Then that’s what he said needs to be done. Was he wrong? I hear the same creaking and moaning and groaning coming from my dash every time I turn off my truck and I only get (ice cold) air through my defroster. Would that be a blower motor issue? Or the HVAC/heater unit? I would love it if it were a 20 minute fix.
     
  17. Sep 24, 2021 at 2:43 PM
    #17
    BenAZ

    BenAZ New Member

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    Does the air blow immediately from the defroster vents when you start the truck, or is there a delay?
     
  18. Sep 24, 2021 at 3:40 PM
    #18
    grave

    grave New Member

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    There’s a delay. If I start my truck with AC all the way up, coldest setting, blowing out the vents, it creaks for about 30 seconds and then starts blowing out the defroster.
     
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  19. Sep 24, 2021 at 3:48 PM
    #19
    BenAZ

    BenAZ New Member

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    I had the same problem but with my heater shortly after buying my 2007. These videos helped me fix it in less than an hour.

    https://www.youtube.com/watch?v=sXJLu8D0Cfo


    https://www.youtube.com/watch?v=Yo9HTgMO2tU

    Its not too difficult to try this and see if your servo can be re timed. It could also be a wiring issue. If it is, they sell just the harness for the blend doors as separate from the rest of the body harness. The second video shows how all the arms and gears need to be indexed.
     
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  20. Oct 19, 2021 at 7:44 PM
    #20
    grave

    grave New Member

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    both of those videos show access through the center console/shifter... i have a column shifter and bench seat. i'll have to look around for some videos with my "grade" SR5.
     
  21. Oct 19, 2021 at 11:41 PM
    #21
    BenAZ

    BenAZ New Member

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    I would think that would be a little bit easier. My 2016 was the same setup as yours before I did the center console swap. Remove the bottom center plastic piece under the stereo. In all fairness I have no experience on a second gen without the center console, although it is identical from what I can tell between second and 2.5 gen trucks.
     
  22. Oct 24, 2021 at 8:59 PM
    #22
    07DCLimited

    07DCLimited New Member

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    Optima 830 CCA Yellowtop 27F battery, full Amsoil throughout.
    Issues like this are why I turn off my AC compressor and let it run for at least a minute with the fan on full before shutting the engine off. If you get rid of all moisture in the system and let the system warm up properly, metals parts like shafts or motors are much less likely to rust and give issues down the road.
     
  23. Oct 26, 2021 at 11:08 AM
    #23
    grave

    grave New Member

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    cool story bro. i think these things just tend to happen after 14 years and 250K miles.
     
  24. Oct 26, 2021 at 12:00 PM
    #24
    MARanger

    MARanger Lost in the woods

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    The servo motor on my 07 stopped functioning. I was quoted 2000 to fix it. I lived with it until they gave me 20k on trade to get me into a 17.
     
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  25. Dec 28, 2021 at 9:17 AM
    #25
    grave

    grave New Member

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    I think my AC/heater unit has mostly given up the ghost. The defroster, which was the only function that worked, has now stopped heating up quickly. Used to be I could start my truck in the morning with the defroster on full blast and come back to a warm cab in five minutes. Now it just blows cold air until I've been driving for 5-10 minutes. And even then it'll stop and start. Looks like I'll be purchasing a whole new unit soon :/
     
  26. Dec 28, 2021 at 9:19 AM
    #26
    BenAZ

    BenAZ New Member

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    Does the coolant come up to temp normally? It could be a thermostat issue.
     
  27. Dec 28, 2021 at 9:19 AM
    #27
    audiowize

    audiowize New Member

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    I would not replace anything based on what you just said. How's your water pump?? If it's getting a little bit leaky and you've lost some coolant, you may not be getting coolant flow through the heater core and that may be your issue.
     
  28. Dec 28, 2021 at 9:46 PM
    #28
    grave

    grave New Member

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    damn, i'm glad I posted. now that you mention it, i noticed the other day that my oil temp was occasionally moving all the way to H while at a stop light. and my coolant reservoir (or something?) has a leak. i fill the reservoir and the next day or two it's down to less than an inch again and there's some splatter. all started happening in the last week or two.
     
  29. Dec 28, 2021 at 9:49 PM
    #29
    audiowize

    audiowize New Member

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    Yeah, don't mess with the heating system till that's resolved.

    You could have a leaky water pump, a leak in the valley, or pieces of the radiator cap have broken off and have gone places they shouldn't be.

    If just the overflow tank has a leak, that would be super easy.

    For the other issues, you'll need to inspect your rad cap and possibly pressure test the system to see where it may be leaking.
     
  30. Jan 2, 2022 at 3:08 PM
    #30
    grave

    grave New Member

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    My water pump has about 65K miles on it. If there’s no coolant flowing through the heater core will it not blow hot air?
     

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